Brake release for aircraft seat

Abstract

A brake release may comprise a pulley frame including a fixed portion and a pivoting arm. A first pulley may be coupled to the pivoting arm of the pulley frame. A second pulley may be coupled to the fixed portion of the pulley frame. A cable may be disposed around the first pulley and the second pulley and may be coupled to a first brake and a second brake. A main lever arm may be coupled to the pivoting arm of the pulley frame. The main lever arm may be configured to move the first pulley away from the second pulley and to pull the cable to release the first brake and the second brake.

What is claimed is: 
     
       1. A brake release, comprising:
 a pulley frame including a fixed portion and a pivoting arm; 
 a first pulley coupled to the pivoting arm of the pulley frame; 
 a second pulley coupled to the fixed portion of the pulley frame; 
 a cable disposed around the first pulley and the second pulley and coupled to a first brake and a second brake; and 
 a main lever arm coupled to the pivoting arm of the pulley frame, wherein the main lever arm is configured to move the first pulley away from the second pulley and to pull the cable to release the first brake and the second brake. 
 
     
     
       2. The brake release of  claim 1 , further including a bearing coupled to the main lever arm, wherein the bearing is coupled to the pivoting arm by a first actuation cable. 
     
     
       3. The brake release of  claim 2 , wherein the first actuation cable is configured rotate the pivoting arm and move the first pulley. 
     
     
       4. The brake release of  claim 3 , wherein the bearing is coupled to a third brake by a second actuation cable. 
     
     
       5. The brake release of  claim 4 , wherein the main lever arm is configured to release the third brake by pulling the second actuation cable. 
     
     
       6. The brake release of  claim 1 , further including a third pulley, the cable disposed around the third pulley. 
     
     
       7. The brake release of  claim 6 , wherein the cable is configured move around the first pulley, the second pulley and the third pulley. 
     
     
       8. A seat track assembly, comprising:
 a first rail disposed in parallel to a second rail; 
 a first brake coupled to the first rail; 
 a second brake coupled to the second rail; 
 a brake release coupled to the first brake and the second brake, the brake release including: 
 a pulley assembly including a pivoting arm, a first pulley, and a second pulley; 
 a cable disposed around the first pulley and the second pulley, and through the pulley assembly and coupled to the first brake and the second brake; and 
 a main lever arm coupled to the pivoting arm, wherein the main lever arm is configured to increase tension in the cable to release the first brake and the second brake; and wherein the main lever arm is configured to move the first pulley away from the second pulley to increase tension in the cable. 
 
     
     
       9. The seat track assembly of  claim 8 , further including:
 a third rail disposed perpendicularly to the first rail and the second rail; and 
 a third brake coupled to the third rail. 
 
     
     
       10. The seat track assembly of  claim 9 , wherein the brake release is coupled to the third brake and wherein the main lever arm is configured to release the third brake. 
     
     
       11. The seat track assembly of  claim 8 , wherein the cable is configured to translate through the pulley assembly in a first direction. 
     
     
       12. The seat track assembly of  claim 8 , wherein at least one of the first brake or the second brake comprises a linear brake. 
     
     
       13. A seat base for an aircraft seat, comprising:
 a seat track assembly slidably coupled to a leg base assembly, the seat track assembly including,
 a first rail disposed in parallel to a second rail, the seat track assembly configured to translate along the first rail and the second rail in a first direction with respect to the leg base assembly, 
 a first brake coupled to the first rail, 
 a second brake coupled to the second rail, and 
 a brake release including a cable coupled to the first brake and the second brake, wherein the brake release is configured to release the first brake and the second brake to allow the seat track assembly to translate in the first direction,
 wherein the brake release includes a first pulley and a second pulley with the cable disposed around the first pulley and the second pulley; and 
 
 a main lever arm configured to move the first pulley away from the second pulley to increase tension in the cable to release the first brake and the second brake. 
 
 
     
     
       14. The seat base of  claim 13 , wherein the seat track assembly further includes a third rail and a third brake coupled to the third rail, the seat track assembly configured to translate along the third rail in a second direction with respect to the leg base assembly. 
     
     
       15. The seat base of  claim 14 , wherein the brake release is configured to release the third brake to allow the seat track assembly to translate in the second direction. 
     
     
       16. The seat base of  claim 15 , wherein the cable is configured to move around the first pulley and the second pulley as the seat track assembly translates in the second direction.